1988
|
World Motorcycle Championship
|
0 (1)
|
0
|
0
|
0
|
U
|
0
|
|
|
1984
|
World Motorcycle Championship
|
2
|
0
|
0
|
0
|
U
|
0
|
|
|
1983
|
World Motorcycle Championship
Henk de Vries Motoren
|
2
|
0
|
0
|
0
|
U
|
0
|
|
|
1982
|
World Motorcycle Championship
Henk de Vries Motoren
|
2
|
0
|
0
|
0
|
U
|
0
|
|
|
1981
|
World Motorcycle Championship
Henk de Vries Motoren
|
2 (1)
|
0
|
0
|
0
|
U
|
0
|
|
|
1980
|
World Motorcycle Championship
|
2 (1)
|
0
|
0
|
0
|
20
|
2
|
|
|
1979
|
World Motorcycle Championship
Team 77
|
6
|
0
|
0
|
0
|
22
|
6
|
|
|
